Towards quantum enhanced metrology for the laser trap Ra atomic EDM search*

The search for the existence of a non-zero electric dipole moment (EDM) could reveal new sources of charge parity (CP) and time (T)-reversal symmetry violations which may explain the baryon asymmetry of the universe and possibly signal physics beyond the Standard Model. Pear-shaped Radium-225 nuclei are expected to have an enhanced nuclear Schiff moment making them a compelling system to search for an atomic EDM. Currently, at the Facility for Rare Isotope Beams (FRIB), we are developing offline upgrades to the Ra EDM experiment located at Argonne National Laboratory. We are exploring the possibility of implementing two quantum techniques to improve the detection efficiency of the Ra EDM search protocol: (1) quantum non-demolition as employed in a recent Yb-171 EDM search and (2) spin-squeezing entanglement recently proposed for an Fr electron EDM search. Combined with other upgrades to the experiment, we aim to improve the sensitivity of the Ra EDM experiment by at least three orders of magnitude.